Here are some examples of words derived from this root:
* Gnosis: Knowledge, especially esoteric or spiritual knowledge.
* Cognition: The mental process of knowing, including awareness, perception, reasoning, and judgment.
* Diagnosis: The identification of a disease or disorder.
* Prognosis: A prediction of the course of a disease.
* Agnostic: A person who believes that the existence of God is unknowable.
* Ignorance: Lack of knowledge or information.
* Recognize: To know again, to identify something previously known.